Brother HL-4140CN Service Manual page 352

■ Error display when "REGI ADJ-BELTOFF" is executed
Error message
REGI_ADJ:NG
■ Error display when "REGI BELT CHECK" or "REGI ADJ&CHECK" is
executed
Error message
NG:X L:YYY R:ZZZ
*1
X shows the result of the state check of the belt unit surface in the number of errors
(1 to 9). As the number is larger, the state of the belt unit is worse. When an error is
detected at the registration mark sensor L or registration mark sensor R, the number of
errors which occurred at the registration mark sensor L is displayed. (The number of
errors which occurred at the registration mark sensor R is displayed only when no
error is detected at the registration mark sensor L.) When ten or more errors are
detected, "NG: A" is displayed.
*2
YYY and ZZZ indicate the largest width in 2,400 dpi dots among the error noises
detected by the registration mark sensor L and registration mark sensor R
respectively. (1 to 999). When an error noise of which width exceeds 999 is detected,
"L: 999 R: 999" is displayed.
Description
Registration mark Execute the adjustment of inter-color position
sensor failure alignment (manual).
(Refer to
alignment (Function code 66)" in this
Replace the belt unit.
Replace the engine PCB ASSY.
Replace the main PCB ASSY.
Replace the registration mark sensor holder
ASSY.
Description
*1,2
Error occurred at the
registration mark sensor L
or registration mark sensor
R, or at the both of them.
5-39
Solution
"Adjustment of inter-color position
Solution
Execute the adjustment of
inter-color position
alignment (manual).
If the error occurs again,
replace the belt unit.
(Refer to "Adjustment of
inter-color position
alignment (Function code
66)" in this chapter.)
chapter.)
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